\ProvidesFile{thuthesis-bachelor.cbx}[2020/08/01 v1.0 ThuThesis biblatex
  citation style]

\RequireCitationStyle{gb7714-2015}

\renewrobustcmd{\mkbibsuperscript}[1]{%
  \unspace\allowhyphens\textsuperscript{%
    \begingroup
    \protected\long\def\mkbibsuperscript##1{%
      \blx@warning{Nested superscript}%
      \mkbibbrackets{##1}}%
    #1\endgroup}\kern\z@}
